Creep Strength and Rupture Strength

There is unlimited stress at that creep doesn't take place and that's why it is not possible to explain anything like creep limit. Nonetheless, for practical reasons creep strength is explained as a stress at a prearranged temperature that produces a minimum creep rate of an exact amount, usually 0.0001 percent/hour or 0.001 percent/hour. Still now another property of material is explained as rupture strength. Rupture strength refers to the stress at a specified temperature to cause rupture after certain particular period, typically 100, 1000 or 10,000 hours. The rupture strength and creep strength plotted against temperature are greatly helpful to designers in making selection of material.